What does this implement/fix?

If webserver.serve_all is true, we should not enforce authentication for Lua pages outside of webhome

Related issue or feature (if applicable): https://discourse.pi-hole.net/t/allow-unauthenticated-access-to-non-admin-lua-pages/80464

Pull request in docs with documentation (if applicable): N/A

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2. I have commented my proposed changes within the code.
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5. I have squashed any insignificant commits. (git rebase)

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• The code change is tested and works locally.
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